SBT Jetski Engines, Parts & Accessories

Results 1 to 2 of 2

Thread: bad piston

  1. #1
    Jun 2004
    lake barkley

    Default bad piston

    Pulled my head today and discovered damage on top outside perimeter of my mag side piston. The head has some slight pitting too. I have not pulled the cylinders yet but they didn't appear damaged at all. They felt smooth with no damage as far as I could tell.
    I have other issues with this motor. When I blocked off the oil injection I laid the rotary bath hose on the hull, below the bath. I think the inner seals are bad on the bath so the oil leaked out and shavings were noticable in the hose when I topped it off. So my rotary gear is bad and the crank could be contaminated.
    The thing is I don't know what to look at in the crank as far as inspection. I don't have a clue why the piston was damaged. Can I do the inspection in the hull? I'm about tired messing with it. On average, how much could I get for it from parting it out?

  2. #2
    Feb 2004
    New Jersey

    Default Re: bad piston

    if your inner seals are bad you will get oil in the cyls , if you have brass shavings in your oil line your brass gear is bad you will need to pull the motor and inspect the crank to check if the gear on the crank has moved . also inspect the rod bearings and washers .you will find the problem when you teardown the motor .
    PRIDE IN SERVICE<br /> <img src="" alt=" - " />

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Bad Piston
    By sks in forum Yamaha
    Replies: 1
    Last Post: 09-29-2006, 05:30 PM
  2. 2000 xlt1200.....bad piston
    By Tenacity328 in forum Yamaha
    Replies: 1
    Last Post: 06-11-2006, 09:26 PM
  3. Need help bad!!!!! with piston compression
    By cdooguy in forum Yamaha
    Replies: 6
    Last Post: 10-14-2005, 11:31 PM
  4. Why only 1 cylinder bad?
    By wmsky in forum Yamaha
    Replies: 1
    Last Post: 07-10-2005, 09:37 PM
  5. Bad piston damage in front cyl - 1100 STX
    By Tom Rosencranz in forum Kawasaki
    Replies: 1
    Last Post: 06-07-2005, 10:01 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts